I need help identifying this components, first marking MPAG apparently from MPS but I cannot find any with that marking. The other one ES=CL supposedly richtek?? I find no info for both. Laptop is DELL precision m6600, video card have no voltage rails at all, one time I got image but never more, measured 19v 5vrun 3vrun are present in graphic card, gpupwren signal also. I guess the first chip MPAG can be related to some voltage prior to gpu core rails. Any help will be appreciated. Thanks in advance
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28275: Monolithic Power Systems MP28275
ES= WDFN-10L: Richtek RT9018B-25GQWOpenBoardView — https://github.com/OpenBoardView/OpenBoardView -
Thanks mate, I checked and datasheet matches chips pinout, I know now power rails they feed. I've been trying to find any info about this old video chip Nvidia Quadro, but I don't find anything, is there any info available?? At least voltages distribution or any schematics or boardview for reference purposes only.
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By any chance u have any idea what component is this, it looks like a transistor sot23-6 marking 3013, but I don't find any logical datasheet that could match and the measurements are weird (I measured one out), it looks like double transistors for enable purposes, there is a whole network of this components connected, I took the first one out and forced enable for rt9018 and I got 3.3v and 1.05v from mp28275 but still no GPU voltage or vram, I guess there is a sequence problem but no schematics and I'm trying to understand the logic for this but I'm stucked 😔Comment
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Just archiving everything related to bumpgate since most stuff has disappeared from Google. Maybe people will finally take the time to read some of it and stop shouting "reflow gpu" at every occasion but rather try to understand what the real issue is…
Interesting parts about the failure analysis are "Why Nvidia's chips are defective" and "Why Nvidia's duff chips are due to shoddy engineering"
May complete this post at a later date with more details.
Basically issue is a combination of thermal dissipation of the chip with hotspot,...
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